Pyrographic or cautery device.



No. 888,833. PATENTED. MAY 26, 1908.

. T. W. MILLER.

PYROGRAPHIG OR GAUTERY DEVIGE.

APPLICATION FILED 1120.9. 1907.

nn A WY INV NTOR- z nes'ses:

BY W

THOMAS W. MILLER,

OF ASHLAND, OHIO.

PYROGRAPHIC OR CAUTERY DEVICE.

Specification of Letters Patent.

Patented May 26, 1908.

Application filed December 9, 1907. Serial No. 405,803.

To all whom it may concern:

Be it known that I, THOMAS W. MILLER, a citizen of the United States, residing at Ashland, in the county of Ashland and State of Ohio, have invented new and useful Improvements in Pyrographic or Cautery Devices, of which the following is a specification.

This invention relates to pyrographic or cautery devices wherein the point of a hollow needle is heated by means of a flame produced by the burning of a suitable fluid supplied to the point of the needle through the interior thereof. Heretofore, devices of this type, whether used to heat needles for burning designs upon wood or for dental purposes, have been supplied with a double bulb separated by a narrow neck ortion contain ing a Valve, one of these bu bs constituting a pump provided with 'an inlet valve for the admission of air, and which on being operated, forces air into the secondary or storage bulb, from which it flows in an even continuous current into a suitable receptacle, containing an inflammable fluid, from which the li uid is forced by the air pressure through a suitable eduction pipe to the hollow needle, the secondary bulb in this construction constituting both a reservoir and equalizer of the current of the air supplied to the receptacle containing the inflammable fluid, so that the pulsations produced by the compressing of the pumping bulb will not cause an intermittent discharge of the inflammable fluid from the needle.

The bulbs, heretofore employed, have consisted of what might be called double-bulbs or two separate bulbs, so united together as to be inseparable by means of a narrow neck portion, but the objection to this mode of construction is that the breaking or puncturing of either bulb renders both bulbs useless and requires the replacement of both as often as either is damaged, thereby causing great expense and inconvenience to the user of the device, the cost of the bulbs being in many instances approximately equivalent to the cost of the entire device, and as they are customarily made of a relatively thick and poor quality of rubber, their breakage is a matter of frequent occurrence.

The objects of this invention, are, therefore, to overcome this objection by making the bulbs separate and so mounting the storage bulb that it can be readily replaced without also renewing the pump bulb and vice versa.

Another object is to make the pumping bulb of comparatively heavy rubber so as to respond promptly when compressed and to form the reservoir or equahzer bulb of a highly elastic and comparatively thin rubber which can be replaced at a very slight cost by any person using the device, without tools, in a short time. By thus making the bulbs separate and the pumping bulb of heavier material, its action is quick and responsive in pum ing air to the storage bulb, which being easi y distensible expands readily under the pressure and a much larger quantity of air may be stored therein than is possible where the bulbs are made of the same material and of approximately even thickness of shell. By making the storage bulb of comparatively thin and highly elastic high grade rubber a large amount of air may be stored, thereby producing an even flow and greater pressure if necessary upon the fluid in the receptacle into which the air is carried;

A still further object is to rovide a suitable standard of rigid materia on which the storage bulb is mounted which will constitute a firm seat therefor and also act as a means for preventing the rolling of the bulb when laid upon a table or other supporting medium, forming as it does a sort of standard for the maintaining of both bulbs in a definite position when the same is not in use.

Other advantages constituting objects of this invention will more fully appear in the subjoined description.

A practical embodiment of my invention is illustrated in the accompanying drawings, in which similar reference numerals indicate like parts in the different figures.

In the drawings, Figure 1 is a perspective of so much of a pyrographic or cautery device as will illustrate the nature of this invention; Fig. 2 is a view in side elevation of the storage bulb pipe which I preferably employ in connection with the device shown in Fig. 1; and, Fig. 3 a longitudinal sectional view through both the pumping and storage bulbs as well as through the standard to which the storage bulb is secured.

Referring specifically to the drawings, the reference numeral 1 denotes a pumping bulb which is of the ordinary type employed on. syringes, atomizers, etc. and is provided with an inlet valve 2 at one end and a neck portion 3 at the opposite end. 1 preferably make this bulb of molded heat-cured rubber of substantial thickness to be readily responsive after compression.

The storage bulb, referred to by the refer ence numeral 4, consists of a thin highly elastic bulb, preferably elliptical in form and provided with a depending neck portion 5. I prefer to make this bulb by the dippingprocess of a comparatively high grade rubber compound containing a large percentage of Para rubber preferably cured by chemical vulcanization. The bulb 4 is ordinarily inclosed in a net 6, as is common in devices of this type to prevent over inflation. The neck portion 5 of the bulb 4 is stretched over the upper end of a standard 7 provided with an enlarged base to steady the entire device when resting upon a table and ofsuflicient weight to hold the same firmly in position. This standard is provided interiorly with a pair of upwardly-extending tubular openings 8 and 9 from the lower ends of each of which project laterally-extending nipples 10 and 11 respectively, so positioned as to be approximately diametrically opposite to each other. The neck portion 3 of the pump bulb is connected to the outer end of the nipple 10 and a tube 12 is connected to the outer end of the nipple 11. The tube 12 extends to a stopper 1.3 of a fluid containing receptacle 14 from which leads an eduction pipe 15 to a needle (not shown). In the upper part of the opening 8 in the standard 7 is a valve 16 designed to prevent any air which is pumped into the bulb 4 from returning to the bulb 1. In using this device, the operator by a series of intermittent compressions of the pumping bulb 1 forces a suflicient quantity of air into the storage bulb 4 to expand the same to a suflicient size to insure a continuous flow of the air into the receptacle 14 through the tube 12, and the pressure of air in the receptacle 14 above the fluid will cause the latter to flow in a steady continuous stream through the eduction pipe 15 to the needle where the fluid is ignited causing the point of the needle to become heated to a red heat varying in color with the intensity of the air pressure produced by the pumping bulb and the force exerted by the resiliency of the storage bulb 4.

From the foregoing it will be seen that it is entirely possible and experience has shown it to be best to make the storage bulb 4 a separate detachable element readily removab e from the standard 7 in order that upon a breakage or puncture of one bulb it may be readily replaced without destroying the usefulness of the other, and also as this bulb 4 is made of a very highly elastic and easily stretchable material a greater distension of the same may be obtained than would be possible to obtain with any degree of safety were the two bulbs made of approximately the same material and united together, as is the customary manner now. It will be further notedthat if either one of the bulbs is ruined by reason of puncture or breakage, it may be readily replaced without replacing the other bulb, and as the cost of replacing either of these bulbs is relatively very small the expense now incident to restoring a de wine of this character, due to the destruction of the bulbs, is substantially eliminated.

Vi hat I claim and desire to secure by Letters Patent, is

1. A device of the class described comprising a pumping bulb provided with a valve, a member provided with tubular openings, nipples extending therefrom, one of said nipples receiving said pumping bulb and the other an eduction tube, and a distensible bulb mounted on said member connecting with said openings.

2. A device of the class described comprising a pumping bulb provided with a valve, a member provided with a pair of projecting nipples, one receiving said pumping bulb and the other an eduction tube, said member provided with openings communicating with the ends of said nipples extending to one end of said member, and a detachable distensible storage bulb mounted on the end of said member communicating with said openings.

3. A device of the class described comprising a pumping bulb provided with a valve, a member provided with a pair of projecting nipples, said member provided with openings extending from said nipples to an end thereof, a valve to close one of said openings, and a distensible storage bulb having a single opening mounted on said member communicating with both of said openings.

4. A device of the class described comprising a pump provided with an intake valve, a detachable distensible storage bulb separate from said pump provided with an opening to receive fluid from said pump, and separate means for conducting fluid from said storage bulb through said opening.

5. A device of the class described comprising a plurality of tubular members with their termini adjacent, a detachable distensible storage bulb provided with a single opening otherwise imperforate inclosing the termini of said members, and a pump provided with a valve connected with one of said members.

6. A device of the class described comprising a member provided with adjacent tubular openings, a pump provided with a valve communicating with one of said openings, and a detachable distensible storage bulb provided with a single opening operatively connected with said member in open communication with the ends of said openings.

7. A device of the class described compris-- ing a member provided with adjacent tubular openings, one of said openings provided with a valve, a pump provided with a valve communicating .with one of said openings, and a detachable distensible storage bulb provided with a single opening operatively connected with said members in open communication with the ends of said openings.

8. A device of the class described comprising a pair of independent conducting means with one end of one means mounted adjacent one of the ends of the other means, a pump connected with one of said conducting means, and a detachable distensible storagebulb provided with a single opening arranged in open communication wit1 the ad'acent termini of said conducting means, su stantially as shown and described.

9. A device of the class described comprising a pair of independent conducting means, one provided with a valve, with one end of one means mounted adjacent one of the ends of the other means, a pump connected with one of said conducting means, and a detachable distensible storage bulb provided With a single opening arranged in open communication with the adjacent termmi of said conducting means, substantially as shown and described.

In testimony whereof I have hereunto set my hand in presence of two subscribing wltnesses.

THOMAS W. MILLER. Witnesses C. D. HUBLER, v A. F. BERGER. 

